Commit | Line | Data |
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826d496d MD |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
fac6795d | 3 | * |
d14d33bf AM |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License, version 2 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
db758600 DG |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
d14d33bf AM |
12 | * |
13 | * You should have received a copy of the GNU General Public License along | |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
fac6795d DG |
16 | */ |
17 | ||
db758600 DG |
18 | #ifndef _ERROR_H |
19 | #define _ERROR_H | |
fac6795d DG |
20 | |
21 | #include <errno.h> | |
d738ac16 | 22 | #include <stdio.h> |
f73fabfd | 23 | #include <stdint.h> |
d05ea5da | 24 | #include <string.h> |
5c73d087 | 25 | #include <stdbool.h> |
a0b439da DG |
26 | #include <urcu/tls-compat.h> |
27 | #include <time.h> | |
fac6795d | 28 | |
4c462e79 MD |
29 | #ifndef _GNU_SOURCE |
30 | #error "lttng-tools error.h needs _GNU_SOURCE" | |
31 | #endif | |
32 | ||
f73fabfd | 33 | #include <lttng/lttng-error.h> |
ffe60014 | 34 | #include <common/compat/tid.h> |
f73fabfd | 35 | |
57d0d501 DG |
36 | /* Stringify the expansion of a define */ |
37 | #define XSTR(d) STR(d) | |
38 | #define STR(s) #s | |
39 | ||
a0b439da DG |
40 | /* |
41 | * Contains the string of the log entry time. This is used as a thread local | |
42 | * storage so we don't race between thread and also avoid memory allocation | |
43 | * every time a log is fired. | |
44 | */ | |
45 | struct log_time { | |
46 | /* Format: 00:00:00.000000 plus NULL byte. */ | |
47 | char str[16]; | |
48 | }; | |
49 | extern DECLARE_URCU_TLS(struct log_time, error_log_time); | |
50 | ||
97e19046 DG |
51 | extern int lttng_opt_quiet; |
52 | extern int lttng_opt_verbose; | |
c7e35b03 | 53 | extern int lttng_opt_mi; |
fac6795d | 54 | |
ffe60014 | 55 | /* Error type. */ |
1eb7e473 | 56 | enum lttng_error_level { |
5c73d087 MD |
57 | PRINT_ERR = 0, |
58 | PRINT_BUG = 1, | |
59 | PRINT_WARN = 2, | |
60 | PRINT_MSG = 3, | |
61 | PRINT_DBG = 4, | |
62 | PRINT_DBG2 = 5, | |
63 | PRINT_DBG3 = 6, | |
64 | }; | |
65 | ||
1eb7e473 | 66 | static inline bool __lttng_print_check_opt(enum lttng_error_level type) |
5c73d087 MD |
67 | { |
68 | /* lttng_opt_mi and lttng_opt_quiet. */ | |
69 | switch (type) { | |
70 | case PRINT_DBG3: | |
71 | case PRINT_DBG2: | |
72 | case PRINT_DBG: | |
73 | case PRINT_MSG: | |
74 | if (lttng_opt_mi) { | |
75 | return false; | |
76 | } | |
77 | /* Fall-through. */ | |
78 | case PRINT_WARN: | |
79 | case PRINT_BUG: | |
80 | case PRINT_ERR: | |
81 | if (lttng_opt_quiet) { | |
82 | return false; | |
83 | } | |
84 | } | |
85 | ||
86 | /* lttng_opt_verbose */ | |
87 | switch (type) { | |
88 | case PRINT_DBG3: | |
89 | if (lttng_opt_verbose < 3) { | |
90 | return false; | |
91 | } | |
92 | break; | |
93 | case PRINT_DBG2: | |
94 | if (lttng_opt_verbose < 2) { | |
95 | return false; | |
96 | } | |
97 | break; | |
98 | case PRINT_DBG: | |
99 | if (lttng_opt_verbose < 1) { | |
100 | return false; | |
101 | } | |
102 | break; | |
103 | case PRINT_MSG: | |
104 | case PRINT_WARN: | |
105 | case PRINT_BUG: | |
106 | case PRINT_ERR: | |
107 | break; | |
108 | } | |
109 | ||
110 | return true; | |
111 | } | |
fac6795d DG |
112 | |
113 | /* | |
75dea654 | 114 | * Macro for printing message depending on command line option and verbosity. |
c7e35b03 JR |
115 | * |
116 | * Machine interface: | |
117 | * We use lttng_opt_mi to suppress all normal msg to stdout. We don't | |
118 | * want any nested msg to show up when printing mi to stdout(if it's the case). | |
119 | * All warnings and errors should be printed to stderr as normal. | |
fac6795d | 120 | */ |
5c73d087 MD |
121 | #define __lttng_print(type, fmt, args...) \ |
122 | do { \ | |
123 | if (__lttng_print_check_opt(type)) { \ | |
124 | fprintf((type) == PRINT_MSG ? stdout : stderr, fmt, ## args); \ | |
125 | } \ | |
126 | } while (0) | |
fac6795d | 127 | |
ffe60014 DG |
128 | /* Three level of debug. Use -v, -vv or -vvv for the levels */ |
129 | #define _ERRMSG(msg, type, fmt, args...) __lttng_print(type, msg \ | |
a0b439da DG |
130 | " - %s [%ld/%ld]: " fmt " (in %s() at " __FILE__ ":" XSTR(__LINE__) ")\n", \ |
131 | log_add_time(), (long) getpid(), (long) gettid(), ## args, __func__) | |
ffe60014 | 132 | |
75dea654 DG |
133 | #define MSG(fmt, args...) \ |
134 | __lttng_print(PRINT_MSG, fmt "\n", ## args) | |
f37d259d MD |
135 | #define _MSG(fmt, args...) \ |
136 | __lttng_print(PRINT_MSG, fmt, ## args) | |
75dea654 | 137 | #define ERR(fmt, args...) \ |
c66f2a27 | 138 | __lttng_print(PRINT_ERR, "Error: " fmt "\n", ## args) |
75dea654 | 139 | #define WARN(fmt, args...) \ |
1d4353b2 | 140 | __lttng_print(PRINT_WARN, "Warning: " fmt "\n", ## args) |
75dea654 | 141 | |
ffe60014 DG |
142 | #define BUG(fmt, args...) _ERRMSG("BUG", PRINT_BUG, fmt, ## args) |
143 | ||
144 | #define DBG(fmt, args...) _ERRMSG("DEBUG1", PRINT_DBG, fmt, ## args) | |
145 | #define DBG2(fmt, args...) _ERRMSG("DEBUG2", PRINT_DBG2, fmt, ## args) | |
146 | #define DBG3(fmt, args...) _ERRMSG("DEBUG3", PRINT_DBG3, fmt, ## args) | |
9047ce05 JG |
147 | #define LOG(type, fmt, args...) \ |
148 | do { \ | |
149 | switch (type) { \ | |
150 | case PRINT_ERR: \ | |
151 | ERR(fmt, ## args); \ | |
152 | break; \ | |
153 | case PRINT_WARN: \ | |
154 | WARN(fmt, ## args); \ | |
155 | break; \ | |
156 | case PRINT_BUG: \ | |
157 | BUG(fmt, ## args); \ | |
158 | break; \ | |
159 | case PRINT_MSG: \ | |
160 | MSG(fmt, ## args); \ | |
161 | break; \ | |
162 | case PRINT_DBG: \ | |
163 | DBG(fmt, ## args); \ | |
164 | break; \ | |
165 | case PRINT_DBG2: \ | |
166 | DBG2(fmt, ## args); \ | |
167 | break; \ | |
168 | case PRINT_DBG3: \ | |
169 | DBG3(fmt, ## args); \ | |
170 | break; \ | |
171 | default: \ | |
172 | assert(0); \ | |
173 | } \ | |
174 | } while(0); | |
ffe60014 DG |
175 | |
176 | #define _PERROR(fmt, args...) _ERRMSG("PERROR", PRINT_ERR, fmt, ## args) | |
75dea654 | 177 | |
818d276f | 178 | #if !defined(__linux__) || ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !defined(_GNU_SOURCE)) |
97e19046 | 179 | |
818d276f MD |
180 | /* |
181 | * Version using XSI strerror_r. | |
182 | */ | |
183 | #define PERROR(call, args...) \ | |
184 | do { \ | |
185 | char buf[200]; \ | |
186 | strerror_r(errno, buf, sizeof(buf)); \ | |
187 | _PERROR(call ": %s", ## args, buf); \ | |
188 | } while(0); | |
189 | #else | |
190 | /* | |
191 | * Version using GNU strerror_r, for linux with appropriate defines. | |
192 | */ | |
75dea654 | 193 | #define PERROR(call, args...) \ |
818d276f | 194 | do { \ |
75dea654 DG |
195 | char *buf; \ |
196 | char tmp[200]; \ | |
197 | buf = strerror_r(errno, tmp, sizeof(tmp)); \ | |
198 | _PERROR(call ": %s", ## args, buf); \ | |
199 | } while(0); | |
818d276f | 200 | #endif |
fac6795d | 201 | |
f73fabfd DG |
202 | const char *error_get_str(int32_t code); |
203 | ||
a0b439da DG |
204 | /* |
205 | * Function that format the time and return the reference of log_time.str to | |
206 | * the caller. On error, an empty string is returned thus no time will be | |
207 | * printed in the log. | |
208 | */ | |
209 | const char *log_add_time(); | |
210 | ||
db758600 | 211 | #endif /* _ERROR_H */ |